Installation of audible warning and belt sensor

[franbmx]

Do you know how to install the audible seatbelt warning for the driver and passenger?

I have mounted the two pretensioners that have two cables and the passenger weight sensor and I have activated opcom the two audible warning options and the tachometer icon in the airbag section but it does not work for me.

Would I miss something else?

It is an astra h gtc.

.

[franbmx]

:ni idea: :Llorar: .

[franbmx]

Do the belts have a control unit?
Or is it the airbags?
Do you think it could be the problem?

That my switchboard does not come prepared for that extra?
​